Question

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✔️✅☑️please check my answers are correct??

And mention in front of every answer why we use that particular verb....

For example:-

as in first Answer

(1) was made :- why we use was made there?? (give reason)

I hope you understand and will help me

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Answer 1

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0.was made - we should use was made has it was already made...

1.had invented - we should use had invented as it was invented long before...

2.connecting - here we use connecting as they are telling that how he invented....

3.produces - we should not use produced as it will produce light anytime...if we use produced it means only then it produced..light.

4. to create - we use to create as he wanted to create....long Lasting light...

5.found - we use found as he already found it...we should not use find....

6.had burned - we should use had burned as it was burned...it was already done...

7.experimented - he experimented as he has done emperitments many times .....

8.helped - we should use helped as we should use past tense here

Answer 2

ANSWER :

0) The first electric light was invented by an English scientist named Humphry Davy in 1800.

Reason : Here we have used passive form of the sentence. Reason is that we can easily understand that a thing can't be invented on its own. One person must have invented it. So if we want to express it as a complete sentence we have to use passive form.

Passive form in past tense : Sub. + was/were + past participle form of verb + by + obj.

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1) He had invented an electric battery by 2) connecting wires to a battery and a piece of carbon.

Reason : Here we have to use past form as the passage is in past form. Then we have used past perfect form in no.2 because it is expressing past perfect form. Then in no.3 , by + (Verb + ing) [Rule] . So by + (Connect + ing)

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3) This made the carbon glow which produced light.

Reason : Past form of verb produce is produced.

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4) Around 1860, the British physicist Sir Joseph Wilson Swan wanted to create a long- lasting electric light.

Reason : As we have to use two verbs in that sentence, so first verb becomes past form. Then the 2nd verb has to be in present form. So we used 'to' there. Then rule : to + Verb (present form) . So to + verb , to + create.

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5) He found that a carbon paper filament did the job but it 6) had burnt quickly.

Reason : 5) Past form of verb, find is found. 6) We have to use past perfect form there. So past perfect form , had + past participle form, had + burnt.

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7) Thomas Alva Edison experimented with thousands of different filaments. In 1880, he discovered the right filament, which helped him to invent the light bulb.

Reason : 7) Past form of verb, experiment is experimented. 8) Past form of verb, help is helped.